THE RESPONSE OF LARGE ROOFS TO WIND ACTION

The response of very large roof systems has been reviewed through a number of aeroelastic model studies. The review covers cantilevered, enclosed, free edged, arched and suspended roof systems. Comparisons have been made with the equivalent response implied by design loads from the Australian Wind Loading Code. For relatively conventional configurations the comparison between code and peak dynamic response was good. However non-conservative exceptions occurred where interference effects increased response, in particular downward going response, and for arched roof systems where under some conditions very large and complex asymmetric response was found to occur.